Sale quick view Add to Cart Dayco Belt Tensioner Assembly | Gen 1 Supercharged (2) MSRP: $250.95 $250.95 $225.86 DAYCO® NO SLACK® AUTOMATIC BELT TENSIONER Belt slippage is one of the main reasons your Gen 1 Supercharged MINI looses performance as time goes on. The supercharger is driven by the one drive belt. If the tension on the belt is... Add to Cart Add to Wish List Add to My Wish List Create New Wish List Compare